Shock! My Stupid Son Is Actually the Lord of the Devil World

Li Qiuhan traveled to the world of cultivating immortals and became a top expert after signing in for three years. However, according to the system's mission regulations, he cannot let anyone know that he is practicing, otherwise he will die to apologize. In desperation, Li Qiuhan could only take the cheap and stupid son he picked up and live in seclusion in a remote village, waiting for the system limit time to end. Until one day, Li Qiuhan saw his foolish son sitting on a huge skull throne in a mountain of corpses, a sea of blood, and endless silence... "Ah? Son, you are actually the notorious Lord of the Demon Realm?" "Huh? So dad, you are the mysterious immortal who has been rumored for a long time in the world of immortality?"